DJVU PDF Pou, S. 1991, "Les de'rive's de'side'ratifs en Khmer", in Austroasiatic Languages, Essays in honour of H. L. Shorto, ed. J.H.C.S. Davidson, pp. 183-192. School of Oriental and African Studies, University of London. cite.
DJVU PDF Jacob, J.M. 1991, "A diachronic survey of some Khmer particles (7th to 17th centuries)", in Austroasiatic Languages, Essays in honour of H. L. Shorto, ed. J.H.C.S. Davidson, pp. 193-226. School of Oriental and African Studies, University of London. cite.